Standard HTTP Header Fields

Content-Name: This indicates the name of the request entity. This SHOULD follow the rules mentioned for field content in [RFC2616] section 4.2. The length SHOULD NOT exceed 260 characters. The value passed through this header is not currently being used on the server.<3>

Content-Length: This indicates the number of bytes being included in the message body of the request or the response. This MUST follow the rules described in [RFC2616] section 14.13. This field MUST be present for all the request messages in section 2.2.